Article of manufacture in a combined radio cabinet and sound amplifying device



Patented Dec. 20, 1932 BATEN'T ori-1cg nc'iirA'LDK if Bizooxs, 'or 'i GLEDALE, CAIFORNIA ARTICLE br'iiiiirac'rtnn I Co'iyiian'nii RnIocAiaiNnr .A/Nnsounn AivirLirYvINe DEVICEN One` object ofmy invention"isftcprovide?y a rigid and sturdy E"radio cabinet providing f an accessible top compartment wi-th ample space for any radio chassis, speaker, batteries and other apparatus or devices required in connection therewith, and wherein "all such devices and parts are entirely concealed from view.

The principal object of my invention, however, is to provide a radio cabinet that would not only serve as a housing for the radio set and its various parts, but would also combine ingeniously all advantages of a satisfactory reproducing element-and the 1mproved quality of sound provided by the use of a special sounding board and sounding chamber.

I attain these objects by the peculiar design and construction of Ithe cabinet and its 2O component battle board illustrated in the accompanying drawing, in which- Y I Figure 1 is a perspective View of my improved cabinet,

Figure 2 is a sectional elevation taken on the line 2-2 of Figure 1,

Figure 3 is a front view of an auxiliary bafle board for use with loud' speakers which operate eiiiciently only when standing in a'vertical position, and

Figure 1 is a fragmentary view of the cabinet with said auxiliary baille board in place.

Similar numerals refer to like parts throughout the several views.

5 indicates the baffle or sounding board which also forms the bottom of the cabinet proper, 6 indicates the front panel of the cabinet, which panel readily admits attachment of the radio control operating mechanism and on which is shown mounted the radio dial 7, and switch levers 8; Below the panel 6 is a transparentk cover 9 such as glass or celluloid, affixed to the cabinet base 12, a space or slot 11 between the two forming a'receptacle forA the insertion-of a card 45. or strip form 10 comprising a ready reference list or directory of radio stations.

The cabinet side walls 13 are reinforced'by standards 14 evenly disposed around the cabinet, the side wall being of light construction,

this mode of construction having the eiect of the' radio receiving 'set Vbeing shown as 18.

To varythe tone and volume of the sound emitted from within the cabinet,1 provide a shutter 19 normally held in position so as not to 'overlapor close said; aperture `16 by# a spring-120, .the said `shutter19 `being held in a piv'oted position bymeans of afpin 21 secured' to the bathe-board, and has a lever 23` ext-'ending past said pivot pin 21, yone end of the spring 20being attachedato saidl 'pivot pin 21, the other end being'ifastened to the baille board byfa suitable bolt 22;v y v y' rThe lever 23 is'pivotably attached to the cabinet as at 24, linkedto the shutter 19 by the link 25'1andflink pins 26and 27. 28 isa toothed rackinto which the lever 23 is ydesignedto engagev near its-'outwardly extended end,antd by means 'of which'the shutter 19 is held'over the aperture 16 at anydesired de-` gre'e', or to' closethe same entirely. A slot 29 re-irnforced in' thebaiiieboard 5 provides an engaging means for 'the finger 30V ofan auX- ilia'r'yibaille or sound'board 31 required when the loudA speaker as indicated in 32 must be placed' in Ka 'verticali position, the cabinet proper beingfsupported in upright position and O ythe floor by means of leg or pedestal members'3`3. K 1

As a practicalarticle ott manufacture, the cabinet is built 'of'any suitable hardwood lor veneer in Y'co"n'ibina'tion.A In its design, itnot onlyembodiesan attractive compact unit for v housing the radio chassis and entirely concealingftheV 'same "from view, but lends itself readily'to'for-m a most suitable 'ladies desk, i a mere structural arrangement of thev 'front ofxthe cabinet permitting itsfadaptation to this purpose; `and it is obvious that saidfront portion also lends itself to the incorporation of other features, the radio station directory asherein before'mentioned and other pury poses for whichit'may be appropriate.

Becauseof` the vital part played` by the sound chamber of all musical instruments,

consider that of the violin case or rand piano, for example, the design of my cabinet along the lines of the latter in conjunction with my baflie board and the location of the sound eliminating aperture therein, I create an outstanding sound amplifier.

Experiments have amply demon strated the best position for the aperture, the resulting effect being the reproduction ot the human voice and instrumental tone of a practically uniform quality. From the deep voiced tuba of an orchestra to the softest note ot a vocal solo-every tone-every sound is reproduced in all its beauty, as nearly perfect as human ingenuity and mechanical contrivances will allow.

Unlike most all radio cabinets, I employ no giille, use no metal screen, cloth or other substance to cover the opening from which the -sound is emitted, said unobstructed opening thus eliminating sound resistance and assuring a clear and positive volume of sound. Located at the bottom of the. cabinet, the opening is not even brought to view. There are no corners or angles to create a resistance, hence the sound is free to travel over an unbroken area until it contacts with the floor from which it rebounds with a fidelity, breadth, and magnificence of tone practically free from distortion, the design and method of constructing the cabinet in a large measure being responsible for this.

Supplementing by a secondary control for increasing or decreasing the volume of tone,

y as all radio instruments are e ui) ed in cabinet provides an adequate additional means for attaining selectivity in volume when occasion requires.

While I have omitted for the salte of simplicity, illustrations showing further adaptations or modifications. it should be understood that these are possible, and in practice, the design of the cabinet can be considerably cheapened or enriched as is common in the furniture art. I am also aware that slight modilications may from time to time be made in the details of construction illustrated without departing, however, from the scope of the present invention as herein set forth, and as defined in the claims which are appended hereto. Hence, I do not limit my present invention to the exact description or construction herein disclosed, but what I do claim, is

1. In a radio apparatus and sound amplifying unit comprising an irregular shaped hollow body with a bottom having an aperture and a hingably aihxed top, leg members attached to said body for holding the same above the iioor, said bottom comprising a baille board, a shut-ter pivotably attached thereto, a spring engaging said shutter, a pin and a lever engaging said bailie board, said pin, lever and spring means functioning to normally position said shutter in open relation to said aperture in said baille board and whereby said aperture may be manually positioned to partially or wholly close said aperture for the purpose described.

2. In a radio apparatus and sound amplitying unit for housing radio a aratus and comprising an irregular shapefliollow body adapted to be positioned above the floor of a. room, a baille board having an aperture, a shutter movably disposed thereto, said shutter adapted to form a closure means for said aperture in said baille board, said shutter closure providing a means for controlling the tone vibrations emitted from said radio apparatus and sound amplifying unit, substantially as described.

DONALD L. BROOKS.

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